Stretch Reducer Rolling Mill With Asymmetric Rollers for Alignment
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Solution Overview
Problem
Existing rolling mills face issues such as symmetry requirements necessitating stand overturning, gravity-induced wear, safety and practicality concerns, difficulty in individual stand locking, excessive maintenance costs, and alignment inconsistencies, leading to reduced reliability and product quality.
Innovation Solution
A rolling mill design with vertically oriented rollers and 210°/330° angled rollers, allowing for independent stand alignment and locking in three directions, using translation and positioning guides for precise positioning, and separate guides for water and scale drainage, reducing wear and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional Y/λ configuration with horizontal and inclined rollers is used, then calibration function is achieved, but symmetry requirements necessitate stand overturning between even and odd positions, increasing complexity and maintenance
Solution Approach 1:
The patent replaces the traditional symmetric Y/λ configuration with an asymmetric arrangement where at least one roller has a vertical rotation axis and another roller's axis forms a 210° or 330° angle with the horizontal. This asymmetric design eliminates the need for stand overturning between even and odd positions, as each stand has a unique configuration that doesn't require symmetry-based repositioning.
2Ease of operation
If stands are repeatedly overturned between even and odd positions, then calibration operation is maintained, but gravity-induced wear increases and reliability decreases
Solution Approach 1:
Instead of overturning stands to maintain calibration operation, the patent inverts the approach by designing stands with asymmetric roller configurations that remain functional in fixed positions. The 210°/330° angled rollers combined with vertical rollers create a configuration that achieves calibration without requiring periodic stand overturning, thereby eliminating gravity-induced wear from repeated positioning changes.
3Manufacturing precision
If individual stand locking is implemented in three directions, then alignment precision is improved, but device complexity and maintenance difficulty increase
Solution Approach 1:
The patent employs self-aligning asymmetric roller configurations that inherently maintain precise alignment without requiring complex three-directional locking mechanisms. The unique 210°/330° angled roller arrangement combined with vertical rollers creates a geometry that naturally resists misalignment, reducing the need for elaborate locking systems and their associated maintenance requirements.
Data Source
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AI summary
A stretch reducer and/or calibrating rolling mill for rod-shaped bodies, in particular tubular bodies, in particular hollow bodies, said rolling mill comprising a plurality of rolling stands (101) each comprising a plurality of rolling rollers (102) mutually arranged so as to define a passage (105) for said rod-shaped bodies, wherein said rolling stands (101) are arranged in sequence along a rolling direction so that the respective passages (105) are substantially aligned to define a rolling path substantially parallel to said rolling direction, wherein each of at least two of said rolling stands (101) comprises three rolling rollers (102).